Process for preparing high bulk density detergent compositions
AssigneeLever Brothers Company, Division of Conopco, Inc.
InventorsPeter W. Appel, Lucas D. M. van den Breckel, Seeng D. Liem, Petrus L. J. Swinkels
Life of this patent
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Abstract
A process for preparing a granular detergent composition or component having a bulk density of at least 550 g/l, which comprises (i) feeding a liquid acid precursor of an anionic surfactant, a solid water-soluble alkaline inorganic material and optionally other materials into a high-speed mixer/densifier, the mean residence time being from about 5 to 30 seconds; (ii) subsequently treating the granular detergent material in a moderate-speed granulator/densifier, whereby it is brought into or maintained in a deformable state, the mean residence time being from about 1-10 minutes; and finally (iii) drying and/or cooling the detergent material.
Claims15
Process for the continuous preparation of a granular detergent composition or component having a bulk density of at least 550 g/l, which comprises
- (i) feeding a liquid acid precursor of an anionic surfactant, a solid water-soluble alkaline inorganic material and optionally other materials into a high-speed mixer/densifier, the mean residence time being from about 5 to 30 seconds, whereby said liquid acid precursor is partly or totally neutralized, to obtain a powder;
- (ii) subsequently mixing said powder in a moderate-speed granulator/densified, said powder thereby being brought into or maintained in a deformable state, said mixing of the powder in said deformable state reducing the intraparticle porosity of said powder the mean residence time being from about 1-10 minutes;
- and finally
- (iii) drying and/or cooling said powder.
Dependencies are inferred from the claim text.